В приведенном ниже тексте на место пропуска (1) нужно добавить слово ... When I last 1)... (to see) her 2) ... (to walk) toward the station, 13) ... (to ask) her where she 4) ... (to go). She answered, "London", but I don't think she 5)... (to speak) the truth because there 6) ... (not to be) any train for London at that time.

The question asks to fill in the blanks in a sentence. The options provided are 'see', 'saw', and 'was seeing'. Based on the context of the sentence, the past tense 'saw' is the most appropriate choice for the blank related to seeing the train. Therefore, the answer is 'saw'.